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US 7,661,241 B2Granted
Universal staircase tool
AssigneeIllinois Tool Works Inc.
InventorsAnatoly Gosis, Richard L. Edwards, Howard W. Kimball, Anthony Brent Marshall
Life of this patent
Estimating the term…
Abstract
A new and improved single tool or jig which is universally useable in connection with the fabrication or trimming of left and right side edge portions of stair tread components, left and right end portions of stair tread side edge plank components, and stair riser components, so as to permit all of such components to be properly mated together in order to impart to the exposed or open stair members a seamless finished appearance.
Claims22
A universal tool for fabricating stair members, comprising:
- a work table;
- a pair of slot means, each having a substantially hockey-stick configuration, disposed as mirror images with respect to each other, and defined within said work table for defining a profile having a first linear portion and a second angled portion disposed at a predetermined angle with respect to said first linear portion such that when one of the stair tread members, and a corresponding one of the stair tread side edge plank members, are secured upon said work table, a corner portion of the one of the stair tread members, and a corner portion of the corresponding one of the stair tread side edge plank members, can each be provided with a predetermined angled cut portion whereby the angled cut portions of the one of the stair tread members, and of the corresponding one of the stair tread side edge plank members, can together form a mitered joint connection when the one of the stair tread members, and the corresponding one of the stair tread side edge plank members, are joined together;
- and
- clamping means mounted upon said work table, at predetermined positions adjacent to said pair of slot means, for adjustably securing the disposition of stair tread and stair tread side edge plank members upon said work table, as well as for accommodating different thickness portions of the stair tread and stair tread side edge plank members, such that said universal tool, comprising said pair of slot means having said substantially hockey stick configurations and disposed as mirror images with respect to each other, can be used to fabricate both left and right side edge portions of stair tread members, and both left and right end portions of stair tread side edge plank members.
1 more element
In combination, a plurality of stair members and a universal tool for fabricating the stair members, comprising:
- a plurality of stair tread and stair tread side edge plank members;
- a work table;
- a pair of slot means, each having a substantially hockey-stick configuration, disposed as mirror images with respect to each other, and defined within said work table for defining a profile having a first linear portion and a second angled portion disposed at a predetermined angle with respect to said first linear portion such that when one of said stair tread members, and a corresponding one of said stair tread side edge plank members, are secured upon said work table, a corner portion of said one of said stair tread members, and a corner portion of said corresponding one of said stair tread side edge plank members, can each be provided with a predetermined angled cut portion whereby the angled cut portions of said one of said stair tread members, and of said corresponding one of said stair tread side edge plank members, can together form a mitered joint connection when said one of said stair tread members, and said corresponding one of said stair tread side edge plank members, are joined together;
- and
- clamping means mounted upon said work table, at predetermined positions adjacent to said pair of slot means, for adjustably securing the disposition of said stair tread and said stair tread side edge plank members upon said work table, as well as for accommodating different thickness portions of said stair tread and said stair tread side edge plank members, such that said universal tool, comprising said pair of slot means having said substantially hockey stick configurations and disposed as mirror images with respect to each other, can be used to fabricate both left and right side edge portions of said stair tread members and both left and right end portions of said stair tread side edge plank members.
2 more elements
Dependencies are inferred from the claim text.